Condenser microphone

Abstract

Embodiments of the present invention provide a condenser microphone with a movable lining and a fixed lining. The movable lining and the fixed lining are respectively connected to a power supply and an amplifier. The movable lining includes graphene (G), formed at least as one graphene layer, while the fixed pad is formed as a fixed plate.

What is claimed is: 
     
       1. A condenser microphone comprising a movable pad and a fixed pad formed as a fixed plate and connected to a power supply and an amplifier, wherein the pads form a capacitor in which the fixed pad is stationary and the movable pad is suitable for acting as a diaphragm while exposed to acoustic waves, wherein the movable pad comprises a graphene layer and a first adhesive layer, and wherein the graphene layer is in direct contact with the first adhesive layer. 
     
     
       2. The condenser microphone according to  claim 1 , wherein the graphene is a doped graphene. 
     
     
       3. The condenser microphone according to  claim 1 , wherein the first adhesive layer is a polymer layer. 
     
     
       4. The condenser microphone according to  claim 1 , wherein the graphene layer is a two-dimensional layer forming a single-layer or more of such layers. 
     
     
       5. The condenser microphone according to  claim 1 , wherein the graphene layer is carbon nanotubes arranged substantially parallel to the surface of the movable pad and arranged substantially perpendicular to the surface of the movable pad. 
     
     
       6. The condenser microphone according to  claim 1 , wherein the movable pad further comprises a second adhesive layer, and wherein the graphene layer is disposed between the first and second adhesive layers. 
     
     
       7. The condenser microphone according to  claim 6 , wherein the second adhesive layer is polymer layer. 
     
     
       8. The condenser microphone according to  claim 6 , wherein the graphene layer is a two-dimensional layer forming a single-layer or more of such layers. 
     
     
       9. The condenser microphone according to  claim 6 , wherein the graphene layer is carbon nanotubes arranged substantially parallel to the surface of the movable pad and arranged substantially perpendicular to the surface of the movable pad. 
     
     
       10. A condenser microphone comprising a movable pad and two fixed pads connected to a power supply and an amplifier, wherein the movable pad comprises graphene formed at least as one layer and the two fixed pad are formed as fixed plates comprising grooves, and wherein the movable pad is disposed between the two fixed pads and comprises a graphene layer and a first adhesive layer, and wherein the graphene layer is in direct contact with the first adhesive layer. 
     
     
       11. The condenser microphone according to  claim 10 , wherein the first adhesive layer is a polymer layer. 
     
     
       12. The condenser microphone according to  claim 10 , wherein the graphene layer is a two-dimensional layer forming a single-layer or more of such layers. 
     
     
       13. The condenser microphone according to  claim 10 , wherein the graphene layer is carbon nanotubes arranged substantially parallel to the surface of the movable pad and arranged substantially perpendicular to the surface of the movable pad. 
     
     
       14. The condenser microphone according to  claim 10 , wherein the movable pad further comprises a second adhesive layer, and wherein the graphene layer is disposed between the first and second adhesive layers. 
     
     
       15. The condenser microphone according to  claim 14 , wherein the second adhesive layer is polymer layer. 
     
     
       16. The condenser microphone according to  claim 14 , wherein the graphene layer is a two-dimensional layer forming a single-layer or more of such layers. 
     
     
       17. The condenser microphone according to  claim 14 , wherein the graphene layer is carbon nanotubes arranged substantially parallel to the surface of the movable pad and arranged substantially perpendicular to the surface of the movable pad. 
     
     
       18. The condenser microphone according to  claim 10 , wherein the graphene is a doped graphene.